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Photo#1267818
white butterfly - Pontia beckerii

white butterfly - Pontia beckerii
Craters of the Moon National Monument and Preserve, Wapi Flow, Wood Rd. Kipuka, Blaine County, Idaho, USA
June 22, 2016

yes - looks like Becker's
There are Checkered Whites with no more dark pattern than this, but the pattern is slightly different.

Moved from Butterflies and Skippers.

Moved
Moved from ID Request.

Pontia species
It's in the genus Pontia, but I don't have to deal with the western species often enough to be confident and the angle makes viewing the upper wings a bit more difficult. It's a male and there are too few marginal spots in the forewing for Checkered White. It is most like Becker's White, Pontia beckerii.

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